<template>
  <view>
    <view class="goods-list">
      <view v-for="(item,i) in goodsList" :key="i" @click="gotoDetail(item)">
        <my-goods :goods="item"></my-goods>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        // 查询参数:
        queryObj: {
          // 查询关键词
          query: '',
          // 商品分类Id
          cid: '',
          // 页码值
          pagenum: 1,
          // 每页显示多少条数据
          pagesize: 10
        },
        // 商品列表
        goodsList: [],
        // 总记录数
        total: 0,
        // 节流阀
        isloading: false,
      };
    },
    // 上拉重置刷新
    onPullDownRefresh(){
      // 1. 重置数据
      this.queryObj.pagenum = 1
      this.isloading = false
      this.goodsList = []
      this.total = 0
      // 2. 重新发请求
      this.getGoodsList(() => uni.stopPullDownRefresh())
    },
    // 上拉触底事件自动加载下一页
    onReachBottom() {
      if(this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg("数据加载完毕！")
      // 如果正在节流阀开启,证明正在加载数据,则不再向下执行查询了
      if(this.isloading) return
      this.queryObj.pagenum++
      this.getGoodsList()
    },
    onLoad(options) {
      this.queryObj.query = options.query || ''
      this.queryObj.cid = options.cid || ''
      this.getGoodsList()
    },
    methods: {
      async getGoodsList(cb) {
        this.isloading = true
        const {
          data: res
        } = await uni.$http.get("/api/public/v1/goods/search", this.queryObj)
        this.isloading = false
        cb && cb()
        if (res.meta.status !== 200) return uni.$showMsg()
        this.goodsList = [...this.goodsList,...res.message.goods]
        this.total = res.message.total
      },
      // 到商品详情页
      gotoDetail(item){
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
        })
      },
    }
  }
</script>

<style lang="scss">
  
</style>
